SINO-R SK50 Ø20x78
Expansion toolholder
ID 209687
SINO-R SK50 Ø20x78, Toolholders
- Expansion toolholder
- Series: SINO-R
- Toolholder interface: SK 50
- Clamping diameter: 20 mm
- Projecting length: 78 mm
- Run-out accuracy: ≤ 0,005 mm measured in the clamping bore
- Balancing grade: G6.3 at 15,000 RPM or Umax < 1 gmm
- Min. torque: 450 Nm
Technical details
| Technology | Expansion toolholder |
|---|---|
| Series | SINO-R |
| Toolholder interface | SK 50 |
| Toolholder standard | DIN ISO 7388-1 AD/AF |
| Clamping diameter D1 | 20 mm |
| D2 [mm] | 48.5 |
| D3 [mm] | 49.72 |
| Projecting length L1 [mm]/[inch] | 78 mm / 3.1" |
| L2 [mm] | 51.0 |
| L3 [mm] | 10.0 |
| L4 [mm] | 42.0 |
| L5 [mm] | 58.9 |
| G | M8x1 |
| Min. torque [Nm] | 450.0 |
| Weight [kg] | 3.4 |
Version
Optimal for heavy duty milling
Run-out accuracy
≤ 0,005 mm measured in the clamping bore
Balancing grade
G6.3 at 15,000 RPM or Umax < 1 gmm
Tool shank quality
h6
Intermediate sleeves
Additional shank diameters can be clamped using intermediate sleeves
Data carriers
Bore for data carrier as an option
Toolholder changes
For automatic toolholder changes
Coolant supply
Bores for form AF are sealed with set-screws as transport safety
Length-setting screw
With adjustment screw for axial length adjustment
Individual
Additional sizes and customized designs are available upon request